Not the person you are replying to, but I think the point they are trying to make is that the less experience a politician has, the more likely they are to beli

Not the person you are replying to, but I think the point they are trying to make is that the less experience a politician has, the more likely they are to believe what they are told by someone with an agenda who is trying to influence them, e.g. special interests. So the lack of experience doesn't cancel out for yea and nay when it comes to any given vote, because special interests will be lobbying mostly for one of the two, and thus the lack of experience (i.e. resistance to influence by having your own knowledge of the area) can tip the balance.